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Samenvatting stralen leer

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-alle zichtbare stralen -UVA -UVB -onzichtbare stralen -golflengtes

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  • January 12, 2021
  • 2
  • 2020/2021
  • Summary

1  review

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By: mgraccuglia • 3 year ago

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Stralenleer

Elektromagnetische spectrum:
 Alle stralen die door de zon gezonden worden – zichtbaar en niet zichtbaar
 Iedere soort straling heeft zijn eigen golflengte
 Hoe kort de golflengte, hoe schadelijker het is voor de mens



Zichtbare stralen

 Licht = gevormd door alle kleuren in het kleurenspectrum
 Licht kan gebroken worden door middel van een prisma
Licht valt uiteen in:
- Rood
- Oranje
- Geel
- Groen
- Blauw
- Violet




Laserstralen
- Laser: light amplification by stimulated emission of radiation (lichtversterking door
opgewekte uitstoot van straling) examenvraag mogelijk
- Met behulp van een kristal en een hoge elektrische spanning wordt een sterk
geconcentreerde smalle bundel evenwijdig licht van 1 golflengte opgewekt

Onzichtbare stralen
 Kan het menselijk oog niet waarnemen
 Infrarode stralen en ultraviolette stralen

Golflengtes boven de 780 NM noemen we infrarood, onder de 380 NM noemen we
ultraviolet.




Stralenleer

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